Crane and mounting assembly structure

Abstract

Disclosed in the present invention are a crane and a mounting assembly structure. The crane comprises a boom, a luffing cylinder and a tower jib structure for function switching, wherein the tower jib structure comprises a jib frame, a tower jib connecting frame connected to the boom, and a mounting assembly structure, and the tower jib connecting frame and the jib frame are movably or fixedly connected to each other by means of the mounting assembly structure. The mounting assembly structure of a first type comprises a transition joint and a connecting switch, the transition joint comprising a first transition joint and a second transition joint. The first transition joint is arranged at a front end of the tower jib connecting frame; the second transition joint is arranged at a rear end of the jib frame; and the first transition joint is connected to or disconnected from the second transition joint by means of the connecting switch. Different from the mounting assembly structure of the first type, the mounting assembly structure of a second type further comprises a tower cap connected to the tower jib connecting frame, and a bottom jib section connected to the jib frame; and the first transition joint is arranged at a front end of the tower cap, and the second transition joint is arranged at a rear end of the bottom jib section. The present invention has the characteristics of simple operation, flexible use and safe operation.

Description

Crane and installation assembly structure Technical Field

[0001] The present invention relates to the field of engineering machinery, and in particular to a crane and an installation component structure. Background Art

[0002] Crane tower booms are widely used in engineering and mechanical fields due to their high structural performance and safety. Existing tower booms are closed structures consisting of an arm, a bracket, and a connecting plate. The bracket and the connecting plate work together to significantly improve the boom's lifting performance. When performing luffing operations on the tower boom, this can only be achieved through a luffing winch. However, due to the large number of wire ropes extending from the luffing winch, the operation is complicated. Furthermore, existing tower booms are also equipped with a mechanical anti-tilt structure. The mechanical anti-tilt structure of the tower boom consists of an anti-tilt hinge on the tower boom connecting frame, a mechanical anti-tilt support rod, a weight, and an anti-tilt slide on the bottom boom. When the bottom boom tilts back to a certain angle, the anti-tilt rod and the weight slot engage, achieving the anti-tilt function. However, the introduction of this structure makes the entire tower boom structure more complex. Due to the active fit between the anti-tilt rod and the weight slot, there is a risk of falling off, making operation unsafe. In addition, in actual use, some working scenarios with low requirements for lifting performance hope to only operate the boom without using the variable-length winch, so as to simplify the operation, speed up the operation and shorten the operation time. The existing tower arm structure is a closed structure, which is not conducive to flexible use.

[0003] Summary of the Invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a crane and installation component structure that is easy to operate, flexible to use, and safe to operate.

[0005] Technical solution: The crane described in the present invention includes a main arm and a luffing cylinder; it also includes a tower arm structure with function switching, the tower arm structure includes an arm frame, a tower arm connecting frame connected to the main arm, and an installation component structure, the tower arm connecting frame and the arm frame are movably or fixedly connected through the installation component structure, and the luffing cylinder controls the main arm to drive the tower arm connecting frame to rise and fall.

[0006] Technical solution: The installation assembly structure described in the present invention includes a conversion joint and a connecting switch, and the conversion joint includes a first conversion joint and a second conversion joint.

[0007] The first conversion joint is arranged at the front end of the tower arm connecting frame; the second conversion joint is arranged at the rear end of the arm frame; and the first conversion joint and the second conversion joint are connected and disconnected through a connection switch.

[0008] Technical solution: The installation assembly structure of the present invention includes a conversion joint, a connecting switch, a tower cap connected to the tower arm connecting frame, and a bottom arm connected to the arm frame. The conversion joint includes a first conversion joint and a second conversion joint;

[0009] The first conversion joint is arranged at the front end of the tower cap; the second conversion joint is arranged at the rear end of the bottom arm; and the first conversion joint and the second conversion joint are connected and disconnected through a connection switch.

[0010] Furthermore, when the connection switch is closed, the tower arm connecting frame is connected to the boom, and the boom is raised and lowered by the boom cylinder by controlling the tower arm connecting frame; when the connection switch is opened, the tower arm connecting frame is disconnected from the boom.

[0011] Furthermore, the tower arm structure also includes a luffing winch, a retraction rope, and a connecting pull plate, one end of the retraction rope extends from the luffing winch; the installation component structure also includes a bracket, the bracket and the connecting pull plate both extend from the end of the retraction rope away from the luffing winch, and the other end of the bracket is connected to the first conversion joint, and the other end of the connecting pull plate is connected to the end of the boom away from the conversion joint. When the connection switch is turned on, the luffing winch is operated to control the retraction rope to rotate the bracket and thereby drive the boom to rise or fall.

[0012] Furthermore, there is at least one bracket.

[0013] Furthermore, the connection switch is a pin shaft, and holes are provided in the first conversion joint and the second conversion joint, and the pin shaft is opened and closed by cooperating with the holes.

[0014] Furthermore, the tower arm structure further includes a conversion pull plate, and the first conversion joint and the second conversion joint are disconnected and connected through the cooperation between the conversion pull plate and the pin shaft.

[0015] Furthermore, there are a plurality of conversion joints and connection switches that cooperate with the conversion joints.

[0016] Furthermore, at least two conversion joints are symmetrically provided from top to bottom along the lifting direction of the boom.

[0017] Beneficial effects: The present invention has the following significant effects: 1. The present invention is easy to operate: the tower arm connecting frame and the boom in the present invention can be movably connected and fixedly connected, and when the tower arm connecting frame and the boom are movably connected, the boom can be raised and lowered when the tower arm connecting frame changes amplitude or does not change amplitude. The operation is simple, the function switching is realized, and the efficiency of the boom is improved; 2. The present invention is flexible to use: the present invention is provided with a conversion joint on the tower arm connecting frame and the boom, and a connecting switch is provided to connect the conversion joint. The connecting switch is provided with two states of open and closed, which is convenient for the disconnection and closing of the tower arm connecting frame and the boom, and meets and is applicable to a variety of different working conditions; 3. The present invention is safe to operate: the present invention is symmetrically provided with at least two conversion joints and connecting switches matched therewith from top to bottom along the boom lifting direction, so that the tower arm connecting frame and the boom are kept in the same straight line, preventing the boom from bending toward the crane at one end away from the crane, simplifying the structure while having strong stability and high safety during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a general schematic diagram of a crane according to the present invention;

[0019] FIG2 is a schematic diagram of a disconnection of a connection switch according to the present invention;

[0020] FIG3 is a schematic diagram of a connection switch closed according to the present invention;

[0021] FIG4 is a schematic diagram of the connection switch and the conversion pull plate according to the present invention;

[0022] Figure 5 is a schematic diagram of the installation when the crane is provided with two brackets. DETAILED DESCRIPTION

[0023] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0024] In the figure, 1 is the bracket, 2 is the boom, 3 is the tower arm connecting frame, 4 is the luffing cylinder, 5 is the luffing winch, 6 is the connecting plate, 7 is the crane, 8 is the conversion joint, 81 is the first conversion joint, 82 is the second conversion joint, 9 is the connecting switch, 10 is the retraction rope, 11 is the pin, 12 is the conversion plate, 13 is the bottom boom, 14 is the tower cap, and 15 is the main boom. In this embodiment, the forward direction of the crane 7 is considered the front, and the reverse direction of the crane 7 is considered the rear.

[0025] Please refer to FIG1 , the present invention discloses a crane and an installation assembly structure.

[0026] Among them, a crane 7 includes a main arm 15 and a luffing cylinder 4; it also includes a tower arm structure with function switching, the tower arm structure includes a boom 2, a tower arm connecting frame 3 connected to the main arm 15, and an installation component structure, the tower arm connecting frame 3 is movably connected or fixedly connected to the boom 2 through the installation component structure, and the luffing cylinder 4 controls the main arm 15 to drive the tower arm connecting frame 3 to rise and fall.

[0027] The present invention provides two embodiments of the installation assembly structure. Embodiment 1: An installation assembly structure includes a conversion joint 8 and a connecting switch 9 , wherein the conversion joint 8 includes a first conversion joint 81 and a second conversion joint 82 .

[0028] The first conversion joint 81 is provided at the front end of the tower arm connecting frame 3 ; the second conversion joint 82 is provided at the rear end of the arm frame 2 ; and the first conversion joint 81 and the second conversion joint 82 are connected and disconnected via a connection switch 9 .

[0029] Example 2: An installation assembly structure includes a conversion joint 8, a connecting switch 9, a tower cap 14 connected to the tower arm connecting frame 3, and a bottom arm 13 connected to the arm frame 2. The conversion joint 8 includes a first conversion joint 81 and a second conversion joint 82;

[0030] The first conversion joint 81 is provided at the front end of the tower cover 14 ; the second conversion joint 82 is provided at the rear end of the bottom arm 13 ; and the first conversion joint 81 and the second conversion joint 82 are connected and disconnected via a connection switch 9 .

[0031] The present invention will be further described below.

[0032] As shown in Figures 2 and 3, the connecting switch 9 has a closed state and an open state. When the connecting switch 9 is closed, the tower arm connecting frame 3 is connected to the boom 2; when the connecting switch 9 is open, the tower arm connecting frame 3 is disconnected from the boom 2. The boom 2 can be raised and lowered by adjusting the connecting switch 9 in the following two ways.

[0033] In operating scenarios where lifting performance is not critical, only the luffing cylinder 4 is used to raise and lower the boom 2, while the tower arm connecting frame 3 is luffed. At this point, closing the connection switch 9 connects the tower arm connecting frame 3 and the boom 2 as a whole. The luffing cylinder 4 indirectly raises and lowers the boom 2 by controlling the raising and lowering of the tower arm connecting frame 3.

[0034] In operating scenarios where high lifting performance is required, there is another way to achieve the raising and lowering of the boom 2. In this case, the tower arm connecting frame 3 does not change its amplitude, so the connection switch 9 needs to be disconnected, that is, the tower arm connecting frame 3 is disconnected from the boom 2. This method also includes a variable amplitude winch 5, a retraction rope 10, and a connecting pull plate 6, one end of which extends from the variable amplitude winch 5. The installation component structure also includes a bracket 1, and the bracket 1 and the connecting pull plate 6 both extend from the end of the retraction rope 10 away from the variable amplitude winch 5. The other end of the bracket 1 is connected to one end of the first conversion joint 81, and the other end of the connecting pull plate 6 is connected to the end of the boom 2 away from the conversion joint 8. When the connection switch 9 is turned on, the variable amplitude winch 5 is operated to control the retraction rope 10 to rotate the bracket 1, thereby driving the boom 2 to be raised or lowered. At least one bracket is provided, which can be a single bracket or multiple brackets. Please refer to Figure 5, which shows the connection state when two brackets are provided in the present invention.

[0035] When the working conditions change, various components can be used flexibly. For example, when switching from a working condition with high lifting performance requirements to a working condition with low lifting performance requirements, the bracket 1, retraction rope 10, and connecting pull plate 6 are disassembled to simplify the structure, and the boom 2 is raised and lowered using the luffing cylinder 4, which is easy to operate.

[0036] In this embodiment, the connection switch 9 is a pin 11. Holes are provided in the first and second conversion joints 81 and 82, and the pin 11 engages with these holes to achieve opening and closing. Under special operating conditions, as shown in Figure 4 , the tower arm structure of the present invention also includes a conversion plate 12. The first and second conversion joints 81 and 82 are disconnected and connected by the conversion plate 12 and the pin 11.

[0037] In addition, a plurality of conversion joints 8 and connection switches 9 are provided. Furthermore, in order to keep the boom 2 and the tower arm connecting frame 3 aligned and prevent the end of the boom 2 away from the crane 7 from bending toward the crane 7, the following embodiment is proposed: at least two conversion joints 8 are provided symmetrically from top to bottom along the lifting direction of the boom 2 to prevent the end of the boom 2 away from the crane 7 from bending toward the crane 7 during the lifting process.

[0038] In this embodiment, the boom 2 includes a transition section, a boom head and other structures.

Claims

1. A crane, comprising a main boom and a luffing cylinder; characterized in that, Tower arm structure including function switching, the tower arm structure comprising a boom, a tower arm connecting frame connected to the main boom, and a mounting component structure, the tower arm connecting frame and the boom being movably or fixedly connected through the mounting component structure, and the luffing cylinder controlling the main boom to drive the tower arm connecting frame to lift and lower.

2. An installation component structure having the tower arm structure as described in claim 1, characterized in that, The mounting component structure includes a conversion joint and a connection switch, the conversion joint including a first conversion joint and a second conversion joint; The first conversion joint is provided at the front end of the tower arm connecting frame; the second conversion joint is provided at the rear end of the boom; and the first conversion joint and the second conversion joint are connected and disconnected through the connection switch.

3. An installation component structure having the tower arm structure as described in claim 1, characterized in that, The mounting component structure includes a conversion joint, a connection switch, a tower cap connecting the tower arm connecting frame, and a bottom boom connecting the boom, the conversion joint including a first conversion joint and a second conversion joint; The first conversion joint is provided at the front end of the tower cap; the second conversion joint is provided at the rear end of the bottom boom; and the first conversion joint and the second conversion joint are connected and disconnected through the connection switch.

4. The installation component structure according to claim 2 or 3, characterized in that, When the connection switch is closed, the tower arm connecting frame is connected to the boom, and the luffing cylinder controls the tower arm connecting frame to raise and lower the boom; when the connection switch is opened, the tower arm connecting frame is disconnected from the boom.

5. The installation component structure according to claim 4, wherein The tower arm structure further includes a luffing winch, a retracting rope, and a connecting pull plate, one end of the retracting rope extending from the luffing winch; the mounting component structure further includes a bracket, the bracket and the connecting pull plate both extending from the end of the retracting rope away from the luffing winch, and the other end of the bracket being connected to the first conversion joint, the other end of the connecting pull plate being connected to the end of the boom away from the conversion joint, when the connection switch is opened, operating the luffing winch to control the retracting rope to rotate the bracket and thereby drive the boom to raise or lower.

6. The installation component structure according to claim 5, characterized in that There is at least one bracket.

7. The installation component structure according to claim 2 or 3, characterized in that The connection switch is a pin shaft, holes being provided in the first conversion joint and the second conversion joint, and the pin shaft realizes opening and closing through cooperation with the holes.

8. The installation component structure according to claim 7, wherein, The tower arm structure further includes a conversion pull plate, and the first conversion joint and the second conversion joint realize disconnection and connection through the cooperation of the conversion pull plate and the pin shaft.

9. The installation component structure according to claim 2 or 3, characterized in that, There are several conversion joints and connection switches cooperating with the conversion joints.

10. The installation component structure according to claim 2 or 3, characterized in that, At least two conversion joints are symmetrically provided along the lifting direction of the boom from top to bottom.

Images